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$280+ Cheap flights from Seattle (SEA) to Helsinki (HEL)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 8/10. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — HEL
Jun 26 — Jul 31
Fri 6/26
Fri 7/3
1 adult, Economy
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1. Tell us where you want to go

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Cheapflights Tip: The best prices from Seattle/Tacoma Intl to Helsinki-Vantaa are usually found in January or October, booked 73 days in advance, depart on a Wednesday or Friday and return on a Tuesday

Cheap flight deals from Seattle to Helsinki

Cheapest flights from Seattle to Helsinki
Explore the most affordable flight options available from Seattle to Helsinki. Find the lowest fares from popular airlines and budget airlines, with prices last updated on May 27, 2026.

This Mytrip deal was found by Cheapflights users on 5/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/267:00 pm
SEA
-
HEL
2 stops15h 00m
Multiple Airlines
Tue 9/87:05 am
HEL
-
SEA
2 stops23h 35m
Multiple Airlines
Deal found 5/25$611
This Mytrip deal was found by Cheapflights users on 5/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/208:00 am
SEA
-
HEL
2 stops22h 40m
Multiple Airlines
Mon 8/249:20 pm
HEL
-
SEA
3 stops33h 47m
Multiple Airlines
Deal found 5/25$637
This Mytrip deal was found by Cheapflights users on 5/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/1410:45 am
SEA
-
HEL
3 stops27h 05m
Multiple Airlines
Tue 7/219:35 am
HEL
-
SEA
3 stops34h 32m
Multiple Airlines
Deal found 5/22$768
This Mytrip deal was found by Cheapflights users on 5/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/56:50 pm
SEA
-
HEL
3 stops27h 30m
Multiple Airlines
Tue 6/97:05 am
HEL
-
SEA
2 stops24h 03m
Multiple Airlines
Deal found 5/23$771
This oojo deal was found by Cheapflights users on 5/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/183:40 pm
SEA
-
HEL
2 stops18h 05m
Icelandair
Thu 10/2212:30 pm
HEL
-
SEA
2 stops15h 25m
Icelandair
Deal found 5/22$796
This Mytrip deal was found by Cheapflights users on 5/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/47:00 pm
SEA
-
HEL
3 stops28h 30m
Multiple Airlines
Tue 8/181:55 pm
HEL
-
SEA
2 stops16h 45m
Multiple Airlines
Deal found 5/26$806
This Trip.com deal was found by Cheapflights users on 5/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/297:00 pm
SEA
-
HEL
3 stops19h 40m
Multiple Airlines
Fri 9/43:40 pm
HEL
-
SEA
3 stops30h 05m
Multiple Airlines
Deal found 5/24$810
This oojo deal was found by Cheapflights users on 5/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/147:00 pm
SEA
-
HEL
2 stops37h 40m
Icelandair
Mon 9/2811:40 am
HEL
-
SEA
2 stops40h 15m
Icelandair
Deal found 5/27$818

Find flight deals from Seattle to Helsinki

Discover tips and strategies to find the most affordable flight options for your journey from Seattle (SEA) to Helsinki (HEL). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated May 27, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$611
(Mytrip)

One-way from

$280
(Kiwi.com)

Popular in

June

Cheapest in

January

Average price

$1,081

Good round-trip deal

$1,288 or less

Good one-way deal

$419 or less
Provider with most accurate pricing for Seattle/Tacoma Intl-Helsinki-Vantaa flight deals.
Search Deals
Provider most trusted by Cheapflights users for Seattle/Tacoma Intl-Helsinki-Vantaa flights.
Search Deals
From Seattle/Tacoma Intl to Helsinki-Vantaa
Search Deals
One-way flight from Seattle/Tacoma Intl to Helsinki-Vantaa
Search Deals
Highest demand for flights based on searches. 21% potential increase in price ($230 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($32 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in May 2026
Search Deals
Price to beat on a round-trip flight from Seattle/Tacoma Intl to Helsinki-Vantaa.
Search Deals
Price to beat on a one-way flight from Seattle/Tacoma Intl to Helsinki-Vantaa.
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Seattle to Helsinki that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated May 27, 2026.
Use the filters below to find and compare flights from Seattle to Helsinki that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

SeattleHelsinki

SEA - HEL

SEAHEL

Seattle/Tacoma Intl

Thu 10/1

7:00 pm-7:45 pm

2 stops38h 45m

Helsinki-Vantaa

Thu 10/22

12:30 pm-8:40 pm

2 stops18h 10m

$837

SeattleHelsinki

SEA - HEL

SEAHEL

Seattle/Tacoma Intl

Tue 11/10

7:05 pm-6:05 pm

1 stop37h 00m

Helsinki-Vantaa

Tue 11/17

12:30 pm-5:10 pm

1 stop38h 40m

$883

SeattleHelsinki

SEA - HEL

SEAHEL

Seattle/Tacoma Intl

Thu 10/1

7:00 pm-7:45 pm

2 stops38h 45m

Helsinki-Vantaa

Fri 10/16

11:40 am-5:55 pm

2 stops16h 15m

$906

SeattleHelsinki

SEA - HEL

SEAHEL

Seattle/Tacoma Intl

Wed 9/30

7:15 pm-11:10 am

1 stop29h 55m

Helsinki-Vantaa

Tue 10/20

12:05 pm-5:20 pm

1 stop39h 15m

$913

SeattleHelsinki

SEA - HEL

SEAHEL

Seattle/Tacoma Intl

Sun 10/11

3:55 pm-3:20 pm

1 stop13h 25m

Helsinki-Vantaa

Thu 10/15

11:15 am-8:48 pm

2 stops19h 33m

$917

SeattleHelsinki

SEA - HEL

SEAHEL

Seattle/Tacoma Intl

Mon 8/17

12:35 pm-6:40 pm

1 stop20h 05m

Helsinki-Vantaa

Tue 8/25

12:05 pm-5:20 pm

1 stop39h 15m

$928
Quickest round-trip

SeattleHelsinki

SEA - HEL

SEAHEL

Seattle/Tacoma Intl

Fri 10/2

3:40 pm-2:00 pm

1 stop12h 20m

Helsinki-Vantaa

Tue 10/20

11:40 am-5:55 pm

2 stops16h 15m

$935

SeattleHelsinki

SEA - HEL

SEAHEL

Seattle/Tacoma Intl

Sun 7/26

7:00 pm-10:30 pm

1 stop17h 30m

Helsinki-Vantaa

Thu 8/6

3:00 pm-8:40 pm

1 stop15h 40m

$976

SeattleHelsinki

SEA - HEL

SEAHEL

Seattle/Tacoma Intl

Sat 8/29

3:55 pm-8:20 am

3 stops30h 25m

Helsinki-Vantaa

Fri 9/18

5:30 am-1:45 pm

3 stops18h 15m

$990

SeattleHelsinki

SEA - HEL

SEAHEL

Seattle/Tacoma Intl

Fri 10/2

3:40 pm-2:00 pm

1 stop12h 20m

Helsinki-Vantaa

Wed 10/21

11:40 am-5:55 pm

2 stops16h 15m

$991

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/25

Showing 1-10 of 17 resultsSorted by cheapest first
1
2

Compare providers for flights from Seattle to Helsinki

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Seattle to Helsinki in May.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
AranGrantPrice Accuracy3 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
CheapflightsfaresPrice Accuracy2 starsTrust Score*1 star
JustAirTicketPrice Accuracy-Trust Score*1 star

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Seattle-Helsinki flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Seattle-Helsinki flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Seattle-Helsinki flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Seattle-Helsinki flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Seattle-Helsinki flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Seattle to Helsinki

Have a flexible travel schedule? Discover the best time to fly to Helsinki from Seattle with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Seattle to Helsinki

How far ahead should I book a flight from Seattle to Helsinki?

The best time to book flights from Seattle to Helsinki is 70 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

What is the cheapest month to book a flight from Seattle to Helsinki?

Currently, January is the cheapest month in which you can book a flight from Seattle to Helsinki (average of $540). Flying from Seattle to Helsinki in June is currently the most expensive (average of $1,183). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

How much does it cost to fly round-trip from Seattle to Helsinki?

Reviews of airlines servicing Helsinki

Get insights into the airlines that provide service to Helsinki. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Helsinki. Reviews last updated May 27, 2026.
Get a feel of what it's like to fly with KLM,Finnair, andScandinavian Airlines from Seattle to Helsinki by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
KLM
7.8
Good
1,525 reviews

Food

7.3

Comfort

7.7

Crew

8.4

Boarding

7.8

Overall

7.8

Entertainment

7.2

Reviews

1 / 20
6.0
Good

Anonymous,Apr 2026

OKC - ATL

Flight was ok - difficult as I had seat next to bathroom.. Food awful
KLM
7.8
Good
1,525 reviews
KLM
7.8
Good
1,525 reviews

Food

7.3

Comfort

7.7

Crew

8.4

Boarding

7.8

Overall

7.8

Entertainment

7.2

Reviews

1 / 20
6.0
Good

Anonymous,Apr 2026

OKC - ATL

Flight was ok - difficult as I had seat next to bathroom.. Food awful
Finnair
7.7
Good
1,399 reviews
KLM
7.8
Good
1,525 reviews

Food

7.3

Comfort

7.7

Crew

8.4

Boarding

7.8

Overall

7.8

Entertainment

7.2

Reviews

1 / 20
6.0
Good

Anonymous,Apr 2026

OKC - ATL

Flight was ok - difficult as I had seat next to bathroom.. Food awful
Scandinavian Airlines
7.4
Good
1,796 reviews
KLM
7.8
Good
1,525 reviews

Food

7.3

Comfort

7.7

Crew

8.4

Boarding

7.8

Overall

7.8

Entertainment

7.2

Reviews

1 / 20
6.0
Good

Anonymous,Apr 2026

OKC - ATL

Flight was ok - difficult as I had seat next to bathroom.. Food awful
Icelandair
7.0
Good
662 reviews
KLM
7.8
Good
1,525 reviews

Food

7.3

Comfort

7.7

Crew

8.4

Boarding

7.8

Overall

7.8

Entertainment

7.2

Reviews

1 / 20
6.0
Good

Anonymous,Apr 2026

OKC - ATL

Flight was ok - difficult as I had seat next to bathroom.. Food awful
British Airways
6.7
Okay
8,007 reviews
KLM
7.8
Good
1,525 reviews

Food

7.3

Comfort

7.7

Crew

8.4

Boarding

7.8

Overall

7.8

Entertainment

7.2

Reviews

1 / 20
6.0
Good

Anonymous,Apr 2026

OKC - ATL

Flight was ok - difficult as I had seat next to bathroom.. Food awful

Related info for your journey

Find useful and relevant information for your journey from Seattle to Helsinki. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airports do I use to fly from Seattle to Helsinki?

    To fly from Seattle to Helsinki, you need to book a flight from Seattle/Tacoma Intl (SEA) to Helsinki-Vantaa (HEL). Nonstop flights to Helsinki-Vantaa from Seattle/Tacoma Intl take 9h 30m on average. When it comes time to book airfare, you have a few options: there are 2 outbound flights from Seattle/Tacoma Intl to Helsinki-Vantaa offered by 6 different airlines.

  • How popular is this Seattle to Helsinki flight route?

    This flight path from Seattle/Tacoma Intl to Helsinki-Vantaa was viewed by 1 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

  • How long is the flight from Seattle to Helsinki?

    Airlines like Icelandair and Turkish Airlines fly from Seattle to Helsinki in about 37h. The time it takes to get you to your destination can typically vary by up to 1h 45m. Airlines will cover a distance of 4764 mi. This flight may include one or multiple stops.

  • What are the cheapest airlines flying from Seattle to Helsinki round-trip?

    Cheapflights users have booked flights from Seattle to Helsinki round-trip from $323. Other airlines that can offer you cheap pricing are Icelandair, from $507, and KLM, from $674. Users have found that Scandinavian Airlines is 61% cheaper than the other options available to this destination.

  • What are the cheapest airlines to fly from Seattle to Helsinki one-way?

    The cheapest airlines for a one-way flight from Seattle to Helsinki are Finnair ($304), Icelandair ($475), and Lufthansa ($601).

  • What are the cheapest flights from Seattle to Helsinki?

    The cheapest flight price from Seattle to Helsinki is $282. On average you can expect to pay $1,507. The most popular route, (Seattle/Tacoma Intl - Helsinki-Vantaa), can usually be booked for $611.

  • Can I find deals for flights from Seattle to Helsinki that include hotel bookings?

    Yes. In addition to deals on Seattle to Helsinki flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Seattle to Helsinki?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Seattle to Helsinki.

  • Can I find deals for business class flights from Seattle to Helsinki?

    Yes. Cheapflights offers flight deals from Seattle to Helsinki by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Seattle to Helsinki?

    Currently, January is the cheapest month in which you can book a flight from Seattle to Helsinki (average of $540). Flying from Seattle to Helsinki in June is currently the most expensive (average of $1,183). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Helsinki?

Book flights to Helsinki if you plan to visit one of these locations
Vantaa
Lahti

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Seattle to Helsinki

See prices for flight routes from nearby airports that may be better suited for you.
Portland to Helsinki flights

Top 6 airlines flying from Seattle to Helsinki

Discover the top 6 airlines that operate flights from Seattle to Helsinki. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated May 27, 2026.
AirlineCheapestAverageFlexibilityOn-time
Scandinavian AirlinesCheapest$323Average$548FlexibilityNo cancel feeOn-time77%
IcelandairCheapest$507Average$853FlexibilityNo cancel feeOn-time76%
KLMCheapest$674Average$1,056FlexibilityNo cancel feeOn-time75%
British AirwaysCheapest$725Average$1,148FlexibilityNo cancel feeOn-time70%
FinnairCheapest$786Average$1,154FlexibilityNo cancel feeOn-time76%
LufthansaCheapest$852Average$1,246FlexibilityNo cancel feeOn-time76%

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